未找到相关数据
INELASTIC NEUTRON-SCATTERING (TFXA) STUDY OF HYDROGEN MODES IN ALPHA-FEOOH (GOETHITE) AND GAMMA-FEOOH (LEPIDOCROCITE)
被引：25
作者：
HALL, PG
CLARKE, NS
MAYNARD, SCP
机构：
[1] Chemistry Department, Exeter University
关键词：
D O I：
10.1021/j100015a059
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ;
081704 ;
摘要：
Inelastic incoherent neutron scattering from goethite (alpha-FeOOH) and lepidocrocite (gamma-FeOOH) has been investigated using a time-focused crystal analyser (TFXA). In each case the neutron spectrum is dominated by two very sharp peaks at ca. 800 and ca. 1100 cm(-1), corresponding to out-of-plane and in-plane internal modes of the hydrogen bond. The peaks per inverse centimeter are for cc at 887 (6.0) and 1000 (4.5) and for gamma at 780 (3.8) and 1000 (5.8); intensities in arbitrary units are shown in parentheses. The peak frequencies are compared with infrared data. Scanning electron microscopy shows goethite to be composed of very small needle-Like crystallites of ca. 500 nm by 120 nm, and lepidocrocite consists of micrometer size aggregates of acicular crystals of ca. 100 nm by 20 nm.
引用
收藏
页码：5666 / 5673
页数：8
相关论文